GMAT Data Sufficiency
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Source: OG11th
Level: 3
By what percent did the median household income in Country Y decrease from 1970 to 1980?
(1)In 1970 the median household income in Country Y was of the median household income in Country X.
(2)In 1980 the median household income in Country Y was of the median household income in Country X.
- A Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- B Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- C BOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- D EACH statement ALONE is sufficient.
- E Statements (1) and (2) TOGETHER are NOT sufficient.